V 
Plate VIII. 
Pleukomya africana, E. Etheridge, sp. (p. 84). 
Loc. Tributaries of the Manuan Creek. 
Fig. 1. Left lateral view of specimen. ' > 
,, 2. Dorsal aspect of same. 
,, 3. Granulate structure of test, x 10. ^ 
Tekedo SP. (p. 85). 
Loc. Tributaries of the Manuan Creek. 
Fig. 4. Section of rock largely composed of this organism. 
5. Vertical section through a pair of valves exposed on the weathered surface 
of another rock mass, showing the incurved umbones. x 2. 
AvELLANA cf. iNCRASSATA, J. Sowerby, sp. (p. 30). 
Loc. Tributaries of the Manuan Creek. 
Fig. 6. Front view of specimen, showing two folds on the columella. 
,, 7. Dorsal view of same. 
,, 8. Surface structure, showing the vertical striations within the concentric 
costse. X 5. 
Gyrodes manuanensis, R. B. Newton (p. 18). 
Loc. Tributaries of the Manuan Creek. 
Fig. 9. Dorsal view, showing the posteriorly flattened and excavated suture and 
obscurely nodulated margin. 
,, 10. Umbilical aspect of same. 
Architectonica kossmati, R. B. Newton (p. 23). 
Loc. Tributaries of the Manuan Creek. 
Fig. 11. Dorsal view showing partial testiferous structure, x 2. 
,, 12. Umbilical aspect of same specimen, x 2. 
Architectonica africana^ R. B. Newton (p. 22). 
Loc. North end of False Bay. 
Fig. 13. Dorsal view of specimen, x 2. 
,, 14. Basal aspect of same specimen, showing the narrow umbilicus, x 2 
,, 15. External surface structure of whorls, as seen in another example, x 6. 
TURRITELLA MANUANENSIS, R. B. NcwtoU (p. 25). 
Loc. Tributaries of the Manuan Creek. 
Fig, 16. Dorsal view of specimen wanting the earlier volutions. 
,, 17. Penultimate whorl of same, showing details of the ornamentation, x 3. 
ScALA ZULULAND1.5:, R. B. Newton (p. 20). 
Loc. North end of False Bay. 
Fig. 18. Dorsal aspect of specimen fractured in the basal region. 
,, 19. Sculpture details of the whorls, showing the posterior bevelled margin. 
X 3. 
Perissoptera sp. (p 27). 
Loc. North end of False Bay. 
Fig. 20. Dorsal view of specimen, x 2. 
Drepanocheilus sp. (p. 26). 
Loc. Tributaries of the Manuan Creek. 
Fig. 21. Dorsal view of specimen of which the basal whorl only is preserved ; it 
occurs as a cavity in the matrix, the figure being drawn from a wax 
squeeze of the same, x 2. 
[Unless otherwise notified, the figures of the fossils are drawn of the natural 
size.] 
